Craig Mayer, Nick WIlliams, Vojtech Huser
Lister Hill National Center for Biomedical Communications, National Library of Medicine, NIH, Bethesda, MD

See the full regCTG repository at https://github.com/lhncbc/CRI/tree/master/regCTG

To return to the list of conditions and view other reports go to https://lhncbc.github.io/CRI/regCTG/regCTG-condition_report_links.html

Study Counts

Type	Study_count
Total_Studies	2912
interventional	2404
Observational	497
Registry	11

Studies over Time

```

Interventional Trials

Intervention Type

intervention_type	Study_Count
Drug	1356
Behavioral	285
Biological	209
Drug\|placebo	165
Biological\|placebo	73
Other	66
Procedure	37
Biological\|Drug	28
Device	27
Dietary Supplement\|placebo	16
Drug\|Other	14
Dietary Supplement	13
Behavioral\|Other	12
Diagnostic Test	11
Behavioral\|Drug	10
Drug\|Procedure	10
Combination Product	6
Device\|Other	6
Biological\|Other	5
Behavioral\|Device	4
Combination Product\|placebo	4
Device\|Drug	4
Genetic	3
Behavioral\|Diagnostic Test	2
Behavioral\|Drug\|Other	2
Behavioral\|Other\|Procedure	2
Behavioral\|Procedure	2
Biological\|Device\|placebo	2
Biological\|Other\|placebo	2
Device\|placebo	2
Diagnostic Test\|Other	2
Dietary Supplement\|Drug	2
Dietary Supplement\|Drug\|placebo	2
Drug\|Other\|placebo	2
Other\|placebo	2
Behavioral\|Biological	1
Behavioral\|Biological\|Drug	1
Behavioral\|Device\|Procedure	1
Behavioral\|Diagnostic Test\|Drug	1
Behavioral\|Dietary Supplement	1
Biological\|Device	1
Biological\|Drug\|Other	1
Biological\|Drug\|placebo	1
Biological\|Procedure	1
Combination Product\|Device	1
Device\|Procedure	1
Drug\|Genetic	1
Drug\|placebo\|Procedure	1
Drug\|Radiation	1
Other\|Procedure	1
placebo	1

Count of Studies by Intervention (normalized and mapped)

Interventions over Time

Weekly studies for each intervention

Studies by Country

Country	Study_Count
United States	1167
United States\|Puerto Rico	140
NA	135
Spain	67
France	63
South Africa	53
Thailand	45
United Kingdom	43
Canada	30
Kenya	30
United States\|Canada	23
Uganda	19
Australia	17
Tanzania	17
Germany	16
Italy	15
Belgium	14
Switzerland	14
Brazil	13
China	13
United States\|Canada\|Puerto Rico	13
Netherlands	12
India	11
Zambia	11
Botswana	8
Russian Federation	8
Malawi	7
Mexico	7
Taiwan	7
United States\|South Africa	7
Argentina	6
Denmark	6
Peru	6
Japan	4
Mozambique	4
Singapore	4
United States\|Peru	4
United States\|Puerto Rico\|Tanzania	4
Vietnam	4
Zimbabwe	4
Ireland	3
Romania	3
South Africa\|Uganda	3
Swaziland	3
United States\|Puerto Rico\|South Africa	3
United States\|South Africa\|Thailand	3
United States\|Switzerland	3
United States\|Thailand	3
United States\|United Kingdom	3
Austria	2
Burkina Faso	2
Burkina Faso\|Cameroon\|Senegal	2
Ethiopia	2
Germany\|United Kingdom	2
India\|Malawi\|South Africa\|Tanzania\|Uganda\|Zambia\|Zimbabwe	2
Indonesia	2
Kenya\|Uganda	2
Malawi\|South Africa\|Uganda\|Zimbabwe	2
Norway	2
Rwanda	2
United States\|Australia	2
United States\|Bahamas\|Brazil\|Puerto Rico	2
United States\|Botswana	2
United States\|Brazil	2
United States\|Brazil\|Puerto Rico	2
United States\|France\|United Kingdom	2
United States\|Germany	2
United States\|Kenya	2
United States\|Tanzania	2
United States\|Uganda	2
Argentina\|Austria\|Belgium\|Brazil\|Denmark\|France\|Germany\|Greece\|Ireland\|Italy\|Mexico\|Netherlands\|Portugal\|Spain\|Sweden\|Switzerland\|United Kingdom	1
Argentina\|Brazil\|Canada\|United Kingdom	1
Argentina\|Brazil\|Chile\|China\|Colombia\|Kenya\|Mexico\|Peru\|Romania\|Russian Federation\|South Africa\|Thailand\|Ukraine	1
Argentina\|Brazil\|India\|Kenya\|South Africa	1
Argentina\|Brazil\|Mexico\|Peru\|Russian Federation\|South Africa\|Thailand	1
Argentina\|Canada\|Mexico	1
Argentina\|Colombia\|Mexico\|Panama\|South Africa\|Thailand	1
Argentina\|France\|South Africa\|United States\|Thailand	1
Argentina\|Germany\|Italy\|Mexico\|Poland\|Portugal\|Romania\|Spain\|Switzerland\|United Kingdom	1
Argentina\|South Africa\|Thailand\|United Kingdom	1
Argentina\|Spain\|Thailand	1
Armenia	1
Australia\|Belgium\|Germany\|Italy\|Netherlands\|Spain\|Sweden\|Switzerland\|United Kingdom	1
Australia\|Brazil\|France\|Poland\|Russian Federation\|Spain\|Sweden\|United Kingdom	1
Australia\|France\|Germany\|Italy\|Spain\|United Kingdom	1
Australia\|United States\|Austria\|Brazil\|Canada\|Denmark\|France\|Germany\|Poland\|Puerto Rico\|South Africa\|Spain\|Switzerland\|United Kingdom	1
Austria\|Belgium\|Denmark\|France\|Germany\|Greece\|Hungary\|Ireland\|Italy\|Netherlands\|Poland\|Portugal\|Spain\|Sweden\|United Kingdom	1
Austria\|Belgium\|Denmark\|France\|Germany\|Hungary\|Ireland\|Israel\|Poland\|Spain\|Sweden\|Switzerland\|United Kingdom	1
Austria\|Belgium\|Denmark\|Germany\|Hungary\|Israel\|Portugal\|Russian Federation\|Spain\|Switzerland\|United Kingdom	1
Austria\|Denmark\|France\|Germany\|Hungary\|Israel\|Romania\|Russian Federation\|Spain\|Switzerland\|United Kingdom	1
Bahamas\|France\|Italy\|Spain	1
Belgium\|France	1
Belgium\|France\|Germany\|Italy\|Romania\|Russian Federation\|Spain\|Switzerland\|United Kingdom	1
Belgium\|France\|Spain	1
Belgium\|Germany\|India	1
Belgium\|Netherlands	1
Botswana\|Brazil\|Haiti\|Peru\|South Africa\|Uganda\|Zambia\|Zimbabwe	1
Botswana\|Brazil\|Malawi\|Zimbabwe	1
Botswana\|Kenya\|Malawi\|South Africa\|Swaziland\|Uganda\|Zimbabwe	1
Botswana\|Kenya\|Malawi\|South Africa\|Uganda\|Zambia\|Zimbabwe	1
Botswana\|Kenya\|Rwanda\|South Africa\|Tanzania\|Uganda\|Zambia	1
Brazil\|Canada\|United States\|Argentina\|Australia\|Austria\|Denmark\|France\|Mexico\|Netherlands\|Portugal\|Puerto Rico\|Romania\|Russian Federation\|South Africa\|Spain\|Sweden\|Taiwan\|Thailand\|United Kingdom	1
Brazil\|Chile\|Mexico\|Peru\|South Africa\|Thailand	1
Brazil\|Estonia\|India\|Thailand	1
Brazil\|Haiti\|Peru\|Trinidad and Tobago	1
Brazil\|Malawi	1
Brazil\|Panama	1
Bulgaria	1
Bulgaria\|Hungary\|Russian Federation	1
Burkina Faso\|CÃ´te D’Ivoire	1
Burkina Faso\|CÃ´te D’Ivoire\|Mali\|Togo	1
Burkina Faso\|South Africa\|Uganda\|Zambia	1
CÃ´te D’Ivoire	1
Cambodia	1
Cambodia\|CÃ´te D’Ivoire\|South Africa	1
Cambodia\|Thailand	1
Cameroon	1
Cameroon\|Ghana\|Nigeria	1
Cameroon\|Kenya\|Senegal\|South Africa\|Thailand\|Uganda	1
Cameroon\|Senegal	1
Canada\|France	1
China\|Korea, Republic of	1
China\|Korea, Republic of\|Singapore	1
Dominican Republic	1
Ecuador	1
Estonia	1
Estonia\|France\|Germany\|Ireland\|Italy\|Latvia\|Portugal\|Russian Federation\|Spain\|United Kingdom	1
France\|Germany\|Puerto Rico\|Mexico\|United States\|Argentina\|Austria\|Brazil\|China\|Russian Federation\|South Africa\|Thailand\|Uganda\|United Kingdom	1
France\|Switzerland	1
France\|United States\|Argentina\|Australia\|Austria\|Belgium\|Brazil\|Canada\|Chile\|Denmark\|Germany\|Greece\|Guatemala\|Hungary\|Malaysia\|Mexico\|Netherlands\|Panama\|Portugal\|Puerto Rico\|Russian Federation\|South Africa\|Spain\|Switzerland\|Thailand\|United Kingdom	1
France\|United States\|Argentina\|Australia\|Belgium\|Brazil\|Canada\|Chile\|Colombia\|Germany\|Greece\|Ireland\|Italy\|Mexico\|Netherlands\|Peru\|Poland\|Portugal\|Puerto Rico\|Romania\|Russian Federation\|South Africa\|Spain\|Taiwan\|United Kingdom	1
France\|United States\|Argentina\|Australia\|Belgium\|Brazil\|Canada\|Israel\|Italy\|Mexico\|Portugal\|Puerto Rico\|Russian Federation\|South Africa\|Spain\|Thailand\|	1
France\|United States\|Australia\|Belgium\|Canada\|Germany\|Italy\|Netherlands\|Poland\|Spain\|Sweden\|Switzerland\|United Kingdom	1
Gambia	1
Georgia	1
Germany\|Hungary\|Portugal\|United States\|Argentina\|Australia\|Austria\|Belgium\|Brazil\|Canada\|France\|Spain\|United Kingdom	1
Germany\|Italy\|Spain	1
Germany\|Netherlands	1
Germany\|Netherlands\|Spain\|Thailand\|United Kingdom	1
Germany\|Netherlands\|United Kingdom	1
Germany\|Thailand\|United Kingdom	1
Germany\|United States\|Australia\|Canada\|Denmark\|France\|Italy\|Sweden\|Switzerland\|United Kingdom	1
Ghana	1
Haiti	1
Haiti\|India\|Malawi\|South Africa\|Tanzania\|Uganda	1
Hungary	1
India\|Malawi\|South Africa\|Tanzania\|Thailand	1
India\|South Africa\|Uganda	1
India\|United States\|Botswana\|Brazil\|Kenya\|Malawi\|South Africa\|Thailand\|Zimbabwe	1
Iran, Islamic Republic of	1
Israel	1
Italy\|Spain	1
Italy\|United States\|Puerto Rico	1
Jamaica	1
Kenya\|Malawi\|Rwanda\|South Africa\|Tanzania	1
Kenya\|Malawi\|South Africa\|Tanzania	1
Kenya\|Malawi\|Uganda\|Zambia\|Zimbabwe	1
Kenya\|Malawi\|Uganda\|Zimbabwe	1
Kenya\|Rwanda	1
Kenya\|Rwanda\|Uganda	1
Kenya\|Rwanda\|United Kingdom	1
Kenya\|South Africa\|Tanzania	1
Kenya\|South Africa\|Uganda\|Zimbabwe	1
Kenya\|Tanzania\|Thailand\|Uganda	1
Kenya\|Tanzania\|Uganda	1
Kenya\|Uganda\|Zambia	1
Kenya\|United Kingdom	1
Korea, Republic of	1
Latvia\|Austria\|Belgium\|Denmark\|France\|Germany\|Ireland\|Italy\|Netherlands\|Portugal\|Spain\|Switzerland\|United Kingdom	1
Lesotho	1
Liberia	1
Malaysia	1
Mauritius\|Thailand	1
Mongolia	1
Mozambique\|South Africa\|Zimbabwe	1
Nepal	1
Netherlands\|United Kingdom	1
Nigeria	1
Nigeria\|Argentina\|Australia\|Chile\|France\|Germany\|Hong Kong\|India\|Ireland\|Malaysia\|Mexico\|New Zealand\|Peru\|Singapore\|South Africa\|Taiwan\|United Kingdom	1
Norway\|Sweden	1
Norway\|Uganda	1
Portugal\|Puerto Rico\|United States\|Argentina\|Mexico\|Russian Federation\|South Africa	1
Puerto Rico	1
Puerto Rico\|United States	1
Romania\|Spain\|United States\|Australia\|Belgium\|Canada\|Denmark\|France\|Germany\|Italy\|Netherlands\|United Kingdom	1
Rwanda\|South Africa\|Tanzania	1
Senegal	1
South Africa\|Tanzania	1
South Africa\|Tanzania\|Thailand\|Zimbabwe	1
South Africa\|Tanzania\|Uganda\|Zambia	1
South Africa\|Tanzania\|Uganda\|Zimbabwe	1
South Africa\|Tanzania\|Zambia	1
South Africa\|Thailand	1
South Africa\|Thailand\|Ukraine	1
South Africa\|Uganda\|Zambia	1
South Africa\|Uganda\|Zimbabwe	1
South Africa\|United States\|Argentina\|Australia\|Austria\|Belgium\|Brazil\|Canada\|Chile\|Colombia\|Costa Rica\|Dominican Republic\|France\|Germany\|Guatemala\|Hong Kong\|Indonesia\|Italy\|Mexico\|Netherlands\|Panama\|Peru\|Portugal\|Puerto Rico\|Singapore\|Spain\|Taiwan\|Thailand\|United Kingdom	1
South Africa\|Zimbabwe	1
Spain\|United States\|Austria\|Belgium\|Canada\|France\|Germany\|Italy\|Latvia\|Luxembourg\|Poland\|Portugal\|Romania\|Switzerland	1
Spain\|United States\|Canada\|Italy\|Netherlands\|Portugal\|Romania	1
Spain\|United States\|France\|Germany\|Italy\|South Africa	1
Sweden	1
Sweden\|Spain\|United States\|Argentina\|Australia\|Canada\|France\|Germany\|Italy\|Korea, Republic of\|Mexico\|Russian Federation\|South Africa	1
Tanzania\|Zambia	1
Uganda\|Zimbabwe	1
Ukraine	1
United Kingdom\|Germany\|Ireland\|Netherlands\|Thailand	1
United States\|American Samoa\|Australia	1
United States\|Argentina	1
United States\|Argentina\|Australia\|Austria\|Belgium\|Brazil\|Chile\|Czechia\|Denmark\|Estonia\|Finland\|France\|Germany\|Greece\|India\|Ireland\|Israel\|Italy\|Luxembourg\|Malaysia\|Mali\|Mexico\|Morocco\|Nigeria\|Norway\|Peru\|Poland\|Portugal\|Puerto Rico\|South Africa\|Spain\|Sweden\|Switzerland\|Thailand\|Uganda\|United Kingdom	1
United States\|Argentina\|Australia\|Austria\|Belgium\|Canada\|Chile\|Costa Rica\|Dominican Republic\|France\|Germany\|Greece\|Hong Kong\|India\|Ireland\|Italy\|Malaysia\|Mexico\|Netherlands\|Portugal\|Puerto Rico\|Romania\|Spain\|Switzerland\|Taiwan\|United Kingdom	1
United States\|Argentina\|Australia\|Austria\|Brazil\|Chile\|France\|Germany\|Guatemala\|Hungary\|Malaysia\|Panama\|Puerto Rico\|Romania\|South Africa\|Spain\|Taiwan\|Thailand\|United Kingdom	1
United States\|Argentina\|Australia\|Belgium\|Botswana\|Canada\|France\|Germany\|Ireland\|Italy\|Mexico\|Netherlands\|Poland\|Portugal\|Puerto Rico\|Romania\|Russian Federation\|South Africa\|Spain\|Switzerland\|United Kingdom	1
United States\|Argentina\|Australia\|Belgium\|Brazil\|Canada\|Chile\|France\|Greece\|Hungary\|Italy\|Mexico\|Netherlands\|Poland\|Romania\|Russian Federation\|South Africa\|Spain\|Taiwan\|United Kingdom	1
United States\|Argentina\|Australia\|Belgium\|Brazil\|Canada\|Chile\|France\|Italy\|Mexico\|Netherlands\|Peru\|Puerto Rico\|Spain\|United Kingdom\|	1
United States\|Argentina\|Australia\|Belgium\|Canada\|France\|Germany\|Italy\|Korea, Republic of\|Mexico\|Netherlands\|Portugal\|Romania\|Russian Federation\|South Africa\|Spain\|Taiwan\|United Kingdom	1
United States\|Argentina\|Australia\|Belgium\|Canada\|France\|Germany\|Italy\|Netherlands\|Russian Federation\|Spain\|Taiwan\|United Kingdom	1
United States\|Argentina\|Australia\|Canada\|France\|Germany\|Italy\|Korea, Republic of\|Mexico\|Russian Federation\|South Africa\|Spain\|Sweden	1
United States\|Argentina\|Australia\|Canada\|France\|Germany\|Italy\|Russian Federation\|Spain\|Taiwan\|United Kingdom	1
United States\|Argentina\|Belgium\|Brazil\|Canada\|France\|Israel\|Italy\|Mexico\|Portugal\|Puerto Rico\|Russian Federation\|Singapore\|South Africa\|Spain\|Thailand	1
United States\|Argentina\|Belgium\|Canada\|Spain\|United Kingdom	1
United States\|Argentina\|Botswana\|Brazil\|China\|Haiti\|Peru\|Puerto Rico\|Thailand	1
United States\|Argentina\|Botswana\|Brazil\|Puerto Rico\|South Africa	1
United States\|Argentina\|Botswana\|Brazil\|Puerto Rico\|South Africa\|Tanzania\|Thailand\|Uganda	1
United States\|Argentina\|Brazil\|Canada\|France\|Germany\|Italy\|Mexico\|Puerto Rico\|Spain	1
United States\|Argentina\|Brazil\|Canada\|France\|Germany\|Italy\|Poland\|Puerto Rico\|Spain\|United Kingdom	1
United States\|Argentina\|Brazil\|Canada\|France\|Italy\|Panama\|Romania\|South Africa\|Spain\|Thailand	1
United States\|Argentina\|Brazil\|Canada\|France\|Italy\|Poland\|Puerto Rico\|Spain\|United Kingdom	1
United States\|Argentina\|Brazil\|Canada\|France\|Romania\|South Africa\|Spain	1
United States\|Argentina\|Brazil\|Haiti\|Kenya\|Malawi\|Puerto Rico\|South Africa\|Tanzania\|Thailand\|Uganda\|Zambia\|Zimbabwe	1
United States\|Argentina\|Brazil\|Peru\|South Africa\|Thailand\|Vietnam	1
United States\|Argentina\|Brazil\|Puerto Rico\|South Africa	1
United States\|Argentina\|Brazil\|Puerto Rico\|South Africa\|Tanzania\|Thailand	1
United States\|Argentina\|Canada\|France\|Italy\|Mexico\|Portugal\|Puerto Rico\|Russian Federation\|South Africa\|Spain\|Thailand\|United Kingdom	1
United States\|Argentina\|Colombia\|Germany\|Mexico\|Peru\|Romania\|Russian Federation\|South Africa\|Spain	1
United States\|Argentina\|France\|Guatemala\|Mexico\|Peru\|Puerto Rico\|Romania\|Russian Federation\|South Africa\|Ukraine	1
United States\|Argentina\|Mexico\|Panama	1
United States\|Argentina\|South Africa\|Thailand\|United Kingdom	1
United States\|Australia\|Austria\|Belgium\|Brazil\|Canada\|Denmark\|Dominican Republic\|France\|Germany\|Italy\|Mexico\|Netherlands\|Portugal\|Puerto Rico\|Spain\|Sweden\|Switzerland\|Thailand\|United Kingdom	1
United States\|Australia\|Austria\|Belgium\|Brazil\|Canada\|Denmark\|Dominican Republic\|France\|Germany\|Italy\|Mexico\|Netherlands\|Portugal\|Puerto Rico\|Spain\|Switzerland\|Thailand\|United Kingdom	1
United States\|Australia\|Austria\|Belgium\|Canada\|Denmark\|France\|Germany\|Italy\|Mexico\|Netherlands\|Portugal\|Puerto Rico\|Sweden\|Switzerland\|Thailand\|United Kingdom	1
United States\|Australia\|Austria\|Belgium\|Canada\|France\|Germany\|Italy\|Portugal\|Puerto Rico\|Spain\|United Kingdom	1
United States\|Australia\|Austria\|Belgium\|Canada\|Italy\|Japan\|Puerto Rico\|Spain\|Switzerland\|Thailand\|United Kingdom	1
United States\|Australia\|Austria\|Brazil\|Canada\|Denmark\|France\|Germany\|Poland\|Puerto Rico\|South Africa\|Spain\|Switzerland\|United Kingdom	1
United States\|Australia\|Austria\|Canada\|Dominican Republic\|Germany\|Mexico\|Puerto Rico\|United Kingdom	1
United States\|Australia\|Austria\|Canada\|Finland\|France\|Germany\|Italy\|Japan\|Puerto Rico\|Spain	1
United States\|Australia\|Belgium\|Brazil\|Canada\|Chile\|China\|Costa Rica\|France\|Germany\|India\|Mexico\|Panama\|Portugal\|Puerto Rico\|Russian Federation\|South Africa\|Spain\|Thailand\|United Kingdom	1
United States\|Australia\|Belgium\|Brazil\|Canada\|France\|Greece\|Italy\|Poland\|Portugal\|Romania\|South Africa\|Spain\|Switzerland\|United Kingdom	1
United States\|Australia\|Belgium\|Canada\|Czech Republic\|France\|Germany\|Greece\|Ireland\|Italy\|Netherlands\|Poland\|Puerto Rico\|Russian Federation\|Singapore\|Spain\|Switzerland\|Taiwan\|United Kingdom	1
United States\|Australia\|Belgium\|Canada\|Denmark\|France\|Germany\|Greece\|Italy\|Netherlands\|Portugal\|Switzerland\|United Kingdom	1
United States\|Australia\|Belgium\|Canada\|France\|Germany\|Italy\|Mexico\|Netherlands\|Portugal\|Puerto Rico\|Spain\|Switzerland\|United Kingdom	1
United States\|Australia\|Belgium\|Canada\|France\|Germany\|Japan\|Netherlands\|Spain\|United Kingdom	1
United States\|Australia\|Belgium\|Canada\|Germany\|Netherlands\|Spain\|Switzerland\|United Kingdom	1
United States\|Australia\|Canada\|Chile\|Colombia\|France\|Italy\|Japan\|Russian Federation\|Spain\|Switzerland\|United Kingdom	1
United States\|Australia\|Canada\|France\|Germany\|Italy\|Netherlands\|Spain\|United Kingdom	1
United States\|Australia\|Canada\|France\|Germany\|Italy\|Russian Federation\|Spain\|United Kingdom	1
United States\|Australia\|Canada\|France\|Puerto Rico	1
United States\|Australia\|Canada\|Germany\|Netherlands\|New Zealand\|Switzerland\|United Kingdom	1
United States\|Australia\|Canada\|Puerto Rico	1
United States\|Australia\|Dominican Republic\|France\|Mexico\|Netherlands\|Spain\|Thailand\|United Kingdom	1
United States\|Australia\|France\|Germany\|Singapore\|Spain\|United Kingdom	1
United States\|Australia\|Puerto Rico	1
United States\|Austria\|Belgium\|Canada\|Chile\|Costa Rica\|France\|Germany\|Guatemala\|Hungary\|Israel\|Italy\|Malaysia\|Panama\|Peru\|Portugal\|Puerto Rico\|Russian Federation\|South Africa\|Spain\|Switzerland\|Thailand\|United Kingdom\|Venezuela	1
United States\|Austria\|Belgium\|Canada\|France\|Germany\|Italy\|Portugal\|Puerto Rico\|Spain\|Switzerland\|United Kingdom	1
United States\|Austria\|Canada\|Denmark\|France\|Germany\|Ireland\|Italy\|Netherlands\|Spain\|United Kingdom	1
United States\|Belgium\|Canada\|China\|Denmark\|France\|Germany\|Italy\|Mexico\|South Africa\|Spain\|Sweden\|Taiwan\|United Kingdom	1
United States\|Belgium\|Canada\|France\|Germany\|Italy\|Portugal\|Spain\|United Kingdom	1
United States\|Belgium\|Canada\|France\|Poland\|Puerto Rico\|Spain\|Sweden\|Switzerland\|United Kingdom	1
United States\|Belgium\|Canada\|Romania\|Russian Federation\|South Africa\|Spain	1
United States\|Belgium\|Dominican Republic\|France\|Italy\|Mexico\|Portugal\|Puerto Rico\|Russian Federation\|Thailand\|Uganda\|United Kingdom	1
United States\|Botswana\|Brazil\|India\|South Africa\|Tanzania\|Thailand\|Uganda\|Zimbabwe	1
United States\|Botswana\|Brazil\|Kenya\|South Africa\|Tanzania\|Thailand\|Uganda\|Zimbabwe	1
United States\|Botswana\|Germany\|South Africa	1
United States\|Botswana\|South Africa	1
United States\|Brazil\|Chile\|France\|Italy\|Portugal\|Spain\|United Kingdom	1
United States\|Brazil\|Ecuador\|Peru\|South Africa\|Thailand	1
United States\|Brazil\|Haiti\|India\|Malawi\|Peru\|South Africa\|Thailand\|Zimbabwe	1
United States\|Brazil\|Haiti\|Jamaica\|South Africa	1
United States\|Brazil\|Italy\|Mexico\|Portugal\|Puerto Rico\|South Africa\|Spain\|Thailand	1
United States\|Brazil\|Malawi\|South Africa	1
United States\|Brazil\|Peru	1
United States\|Brazil\|Peru\|Switzerland	1
United States\|Brazil\|Puerto Rico\|South Africa\|Thailand	1
United States\|Brazil\|South Africa	1
United States\|Brazil\|South Africa\|Tanzania\|Thailand	1
United States\|Canada\|Dominican Republic\|France\|Italy\|Mexico\|Netherlands\|Portugal\|Puerto Rico\|Sweden\|United Kingdom	1
United States\|Canada\|Dominican Republic\|Japan\|Spain\|Taiwan\|Thailand	1
United States\|Canada\|France\|Germany\|Israel\|Italy\|Mexico\|Netherlands\|Spain\|Switzerland	1
United States\|Canada\|France\|Germany\|Italy	1
United States\|Canada\|France\|Germany\|Italy\|Japan\|Netherlands\|Russian Federation\|South Africa\|Spain\|United Kingdom	1
United States\|Canada\|France\|Germany\|Portugal\|Puerto Rico\|Spain\|United Kingdom	1
United States\|Canada\|France\|Germany\|Spain	1
United States\|Canada\|France\|Germany\|United Kingdom	1
United States\|Canada\|France\|Italy	1
United States\|Canada\|France\|Italy\|Poland\|Puerto Rico\|Spain	1
United States\|Canada\|France\|Italy\|Spain	1
United States\|Canada\|Netherlands\|Puerto Rico	1
United States\|Costa Rica\|Panama\|Puerto Rico	1
United States\|Czechia\|France\|Germany\|Hungary\|Poland\|Puerto Rico\|Spain\|United Kingdom	1
United States\|Denmark	1
United States\|Denmark\|Germany	1
United States\|Dominican Republic	1
United States\|Dominican Republic\|Russian Federation\|Thailand\|Uganda	1
United States\|France	1
United States\|France\|Germany\|Italy\|Puerto Rico\|Romania\|Russian Federation\|Spain\|Switzerland	1
United States\|France\|Germany\|Italy\|Russian Federation\|Spain	1
United States\|France\|Germany\|Italy\|South Africa\|Spain	1
United States\|France\|Germany\|Spain	1
United States\|France\|Germany\|United Kingdom	1
United States\|France\|Spain	1
United States\|Germany\|Italy\|Puerto Rico\|Spain\|United Kingdom	1
United States\|Germany\|Spain	1
United States\|India	1
United States\|Italy	1
United States\|Italy\|Argentina\|Australia\|Austria\|Belgium\|Brazil\|Canada\|Denmark\|France\|Germany\|Greece\|Mexico\|Netherlands\|Portugal\|Spain\|Switzerland\|United Kingdom	1
United States\|Italy\|Puerto Rico\|	1
United States\|Kazakhstan	1
United States\|Kenya\|Puerto Rico\|South Africa	1
United States\|Kenya\|Rwanda\|South Africa	1
United States\|Kenya\|Tanzania\|Uganda	1
United States\|Malawi\|South Africa\|Zambia\|Zimbabwe	1
United States\|Mexico	1
United States\|Netherlands	1
United States\|Panama\|United Kingdom	1
United States\|Puerto Rico\|South Africa\|Zimbabwe	1
United States\|Russian Federation	1
United States\|Rwanda	1
United States\|South Africa\|Thailand\|Uganda\|Zimbabwe	1
United States\|South Africa\|Uganda	1
United States\|South Africa\|Zimbabwe	1
United States\|Spain\|Belgium\|Canada\|France\|Italy\|Portugal	1
United States\|Taiwan\|Argentina\|Australia\|Belgium\|Canada\|France\|Germany\|Italy\|Mexico\|Peru\|Poland\|Portugal\|Romania\|Russian Federation\|Spain\|Switzerland\|United Kingdom	1
United States\|Tanzania\|Zambia\|Zimbabwe	1
United States\|Zimbabwe	1

Sites per Study

Site_count	Study_Count
1	1240
2	184
3	126
4	73
5	72
6	51
7	49
8	36
9	37
10	31
11	24
12	27
13	18
14	15
15	31
16	9
17	24
18	17
19	11
20	17
21	5
22	13
23	13
24	10
25	8
26	8
27	8
28	6
29	5
30	10
31	4
32	9
33	3
34	6
35	6
36	7
37	10
38	2
39	10
40	5
41	3
42	5
43	1
44	6
45	8
46	4
47	5
48	4
49	3
50	4
51	6
52	6
53	3
54	4
55	1
56	5
57	2
58	2
59	2
60	2
61	2
62	5
63	2
64	2
65	1
66	1
67	1
68	4
69	1
70	1
71	2
72	3
74	1
75	1
76	2
77	3
78	2
80	4
82	1
83	2
84	2
87	2
88	2
89	2
90	1
91	1
93	1
95	1
96	1
97	1
99	3
101	1
102	2
103	1
105	1
107	2
109	1
115	1
117	3
119	1
120	1
129	1
133	1
134	1
140	1
145	1
146	1
167	1
172	1
174	1
178	1
180	2
202	1
218	1
233	1
361	1

Phase

Phase	Study_Count
Phase 1	651
N/A	577
Phase 2	425
Phase 3	362
Phase 4	240
Phase 1/Phase 2	104
Phase 2/Phase 3	37
Early Phase 1	8

Number of Arms

Number_of_Arms	Count_of_Studies
1	323
2	773
3	195
4	107
5	43
6	28
7	9
8	25
9	7
10	3
11	3
12	4
13	1
14	1
15	1
16	1
21	1
NA	879

Number of Updates

Count of Versions	Count of Studies
1	318
2	205
3	264
4	291
5	222
6	183
7	143
8	106
9	67
10	78
11	62
12	46
13	35
14	29
15	21
16	27
17	24
18	12
19	12
20	14
21	12
22	17
23	8
24	10
25	12
26	9
27	15
28	7
29	4
30	5
31	7
32	7
33	3
34	7
35	4
36	6
37	3
38	5
39	6
40	6
41	10
42	6
43	5
44	4
45	2
46	2
47	2
48	3
49	1
50	1
51	1
52	1
53	4
54	1
55	2
56	2
57	2
58	1
59	1
60	1
61	1
62	1
64	1
65	2
66	2
67	2
68	3
69	1
70	1
72	4
74	1
81	1
82	2
83	1
88	1
91	1
96	1
99	1
102	1
103	1
107	1
111	1
114	1
116	1
124	1
128	1
129	1
144	1
149	1
182	1
189	1

Update History Change Type

Change Type	Count_of_Changes	Count_of_Studies	ratio
Study Status	20075	2086	9.623682
Contacts/Locations	7580	1681	4.509221
Recruitment Status	3302	1646	2.006075
Study Design	2430	1467	1.656442
None (earliest Version on record)	2404	2404	1.000000
Outcome Measures	2114	990	2.135353
Study Identification	2092	1200	1.743333
Sponsor/Collaborators	2016	1263	1.596199
Study Description	1879	800	2.348750
Eligibility	1595	823	1.938032
Arms	1561	878	1.777904
Interventions	1561	878	1.777904
Oversight	1131	899	1.258064
Conditions	1060	721	1.470180
References	929	655	1.418321
More Information	848	238	3.563025
Results	352	352	1.000000
Baseline Characteristics	223	153	1.457516
IPDSharing	190	157	1.210191
Reported Adverse Events	172	123	1.398374
Participant Flow	164	119	1.378151
Results Submission Events	121	121	1.000000
Documents	102	93	1.096774
2020 Outcome Measures	1	1	1.000000
Quality Control Review has not concludedReturned: May 1	1	1	1.000000

Enrollment Metrics by Phase

Measure	Early.Phase.1	N.A	Phase.1	Phase.1.Phase.2	Phase.2	Phase.2.Phase.3	Phase.3	Phase.4
Min.	6.00	4.00	2.00000	6.00000	5.0000	16.0000	10.000	2.0000
1st Qu.	11.50	50.00	19.00000	24.00000	41.5000	59.0000	150.000	32.5000
Median	57.00	180.00	31.00000	42.50000	87.0000	190.0000	373.000	76.0000
Mean	288.50	1395.19	49.69181	94.25962	187.6569	856.3514	1325.483	300.5607
3rd Qu.	320.25	551.50	56.50000	117.00000	200.0000	420.0000	743.500	186.0000
Max.	1325.00	299038.00	718.00000	905.00000	5029.0000	12000.0000	192814.000	18696.0000

Trial Group Type

group_type	Group_Count
Experimental	2385
NA	879
Active Comparator	714
Placebo Comparator	345
No Intervention	172
Other	152
Sham Comparator	13

Intervention Model

intervention_model	Study_Count
Parallel Assignment	1166
NA	557
Single Group Assignment	459
Crossover Assignment	148
Factorial Assignment	57
Sequential Assignment	17

Primary Purpose

primary_purpose	Study_Count
Treatment	1542
Prevention	535
NA	77
Basic Science	53
Health Services Research	48
Supportive Care	48
Other	43
Diagnostic	34
Screening	19
Educational/Counseling/Training	4
Device Feasibility	1

Observational Studies

Studies by Country

Country	Study_Count
United States	196
NA	54
United States\|Puerto Rico	28
Thailand	24
France	17
Germany	16
Spain	13
Italy	10
Canada	9
United Kingdom	9
Uganda	7
Brazil	6
China	5
Switzerland	5
Taiwan	5
Japan	4
Kenya	4
South Africa	4
Zambia	4
Botswana	3
Ghana	3
Korea, Republic of	3
Lesotho	3
Australia	2
Belgium	2
Cameroon	2
Denmark	2
Ethiopia	2
Indonesia	2
Malawi	2
Russian Federation	2
Swaziland	2
United States\|Canada	2
Zimbabwe	2
Argentina	1
Argentina\|Brazil\|Mexico	1
Australia\|Italy\|Spain	1
Austria\|Belgium\|France\|Germany\|Ireland\|Italy\|Netherlands\|Poland\|Portugal\|Spain\|Sweden\|Switzerland\|United Kingdom	1
Austria\|Poland	1
Austria\|Poland\|Romania	1
Belgium\|Germany\|Ireland\|Italy\|Netherlands\|Spain\|United Kingdom	1
Belgium\|Germany\|Italy\|Romania\|Spain\|Switzerland\|United Kingdom	1
Botswana\|Brazil\|India\|Malawi\|Peru\|South Africa\|Thailand\|Zimbabwe	1
Botswana\|Brazil\|South Africa	1
Brazil\|India\|Malawi\|South Africa\|Zimbabwe	1
Brazil\|Peru\|South Africa	1
China\|Russian Federation	1
Ecuador\|Peru	1
Finland\|Ireland\|Netherlands\|Portugal\|Switzerland	1
Haiti\|Peru	1
Hong Kong	1
India	1
Israel	1
Malawi\|South Africa\|Uganda\|Zambia\|Zimbabwe	1
Malawi\|South Africa\|Uganda\|Zimbabwe	1
Mali	1
Netherlands	1
Nigeria	1
Poland	1
Rwanda\|South Africa	1
South Africa\|Tanzania\|Zambia	1
Tanzania	1
Uganda\|Zimbabwe	1
United States\|American Samoa\|Australia\|Belgium\|Canada\|Chile\|Denmark\|Finland\|Gambia\|Germany\|Japan\|Morocco\|New Zealand\|Poland\|Portugal\|Uruguay	1
United States\|Argentina\|Australia\|Canada\|France\|Germany\|Netherlands\|Spain\|Taiwan\|Thailand\|United Kingdom	1
United States\|Argentina\|Brazil\|Guatemala\|Mexico\|Peru\|South Africa	1
United States\|Australia\|Argentina\|Austria\|Belgium\|Brazil\|Canada\|Estonia\|France\|Germany\|Ireland\|Israel\|Italy\|Japan\|Lithuania\|Luxembourg\|Martinique\|New Zealand\|Norway\|Peru\|Poland\|Puerto Rico\|Spain\|Switzerland\|Thailand\|United Kingdom	1
United States\|Australia\|Brazil\|Canada\|Thailand	1
United States\|Australia\|Brazil\|Canada\|Zimbabwe	1
United States\|Belgium\|Brazil\|Canada\|France\|Germany\|Greece\|Italy\|Puerto Rico\|Spain\|United Kingdom	1
United States\|Brazil\|Peru\|South Africa	1
United States\|Brazil\|South Africa\|Tanzania\|Thailand	1
United States\|Haiti	1
United States\|India\|Kenya\|Thailand	1
United States\|Malawi\|South Africa\|Tanzania\|Uganda	1
United States\|South Africa	1
Vietnam	1

Sites per Study

Site_count	Study_Count
1	308
2	22
3	22
4	9
5	11
6	9
7	2
8	10
9	8
10	6
11	6
12	4
13	3
14	2
15	6
17	5
18	4
19	5
20	3
21	5
22	1
23	3
24	3
26	2
27	1
29	3
30	1
32	1
34	2
35	2
36	2
38	2
39	1
40	1
42	1
45	2
46	1
47	1
48	1
51	1
53	1
58	1
60	1
63	2
66	1
73	1
77	1
83	1
84	1
90	1
91	1
102	1
223	1
267	1

Number of Updates

Count of Versions	Count of Studies
1	42
2	54
3	85
4	43
5	45
6	36
7	21
8	16
9	16
10	23
11	8
12	14
13	7
14	7
15	2
16	2
17	6
18	1
19	2
20	6
22	3
23	2
24	5
25	2
26	5
27	4
28	3
29	1
30	1
31	1
33	2
34	1
35	2
37	1
39	2
46	2
47	1
48	1
53	1
56	1
57	1
62	1
67	1
68	2
71	1
74	1
97	2
101	1
106	1
125	1
126	1
149	1
151	1
152	2
171	1
174	1
175	1

Update History Change Type

Change Type	Count_of_Changes	Count_of_Studies	ratio
Study Status	5467	455	12.015385
Contacts/Locations	1415	342	4.137427
Study Description	1013	195	5.194872
Study Design	736	374	1.967914
Recruitment Status	636	371	1.714286
None (earliest Version on record)	497	497	1.000000
Eligibility	468	241	1.941909
Sponsor/Collaborators	445	247	1.801619
Study Identification	353	231	1.528139
Outcome Measures	262	159	1.647799
Oversight	214	173	1.236994
Groups	211	154	1.370130
Interventions	211	154	1.370130
References	211	119	1.773109
Conditions	187	134	1.395522
More Information	45	21	2.142857
Results	43	43	1.000000
IPDSharing	25	25	1.000000
Baseline Characteristics	10	8	1.250000
Documents	7	5	1.400000
Results Submission Events	6	6	1.000000
Participant Flow	5	4	1.250000
Reported Adverse Events	4	3	1.333333

Enrollment Metrics

Measure	Observational
Min	0.0000
1st Qu	55.5000
Median	164.0000
Mean	909.8463
3rd Qu	501.0000
Max	64186.0000

Observation Model

observational_model	Study_Count
Cohort	251
NA	126
Case-Only	38
Case Control	27
Case-Control	24
Other	17
Natural History	6
Defined Population, Natural History	4
Ecologic or Community	2
Case-Crossover	1
Case Control, Natural History	1

Time Perspective

time_perspective	Study_Count
Prospective	290
NA	80
Cross-Sectional	67
Retrospective	38
Other	16
Longitudinal, Prospective	4
Cross-Sectional, Retrospective/Prospective	1
Longitudinal	1

Registries

Studies by Country

Country	Study_Count
United States	4
Spain	2
Brazil	1
Ethiopia	1
France	1
Mexico	1
Tanzania	1

Sites per Study

Site_count	Study_Count
1	9
4	1
6	1

Number of Updates

Count of Versions	Count of Studies
1	2
2	2
4	2
6	2
7	1
13	2

Update History Change Type

Change Type	Count_of_Changes	Count_of_Studies	ratio
Study Status	48	9	5.333333
Contacts/Locations	15	7	2.142857
Study Design	14	8	1.750000
Recruitment Status	13	9	1.444444
None (earliest Version on record)	11	11	1.000000
Sponsor/Collaborators	8	3	2.666667
Eligibility	6	3	2.000000
Study Identification	6	2	3.000000
Conditions	5	2	2.500000
Oversight	5	4	1.250000
Study Description	5	3	1.666667
Outcome Measures	3	3	1.000000
References	3	2	1.500000
Groups	2	1	2.000000
Interventions	2	1	2.000000
IPDSharing	1	1	1.000000

Enrollment Metrics

Measure	Registries
Min	1.00
1st Qu	103.25
Median	173.50
Mean	495.90
3rd Qu	762.50
Max	2000.00

Registry Model

observational_model	Study_Count
Cohort	4
Other	3
Ecologic or Community	2
Case Control	1
NA	1

Time Perspective

time_perspective	Study_Count
Prospective	10
Cross-Sectional	1

Follow-up

target_duration	Study_Count
12 Months	3
1 Day	1
1 Year	1
24 Months	1
3 Years	1
31 Years	1
5 Years	1
6 Months	1
7 Months	1

intervention_type	Study_Count
Drug	1356
Behavioral	285
Biological	209
Drug\|placebo	165
Biological\|placebo	73
Other	66
Procedure	37
Biological\|Drug	28
Device	27
Dietary Supplement\|placebo	16
Drug\|Other	14
Dietary Supplement	13
Behavioral\|Other	12
Diagnostic Test	11
Behavioral\|Drug	10
Drug\|Procedure	10
Combination Product	6
Device\|Other	6
Biological\|Other	5
Behavioral\|Device	4
Combination Product\|placebo	4
Device\|Drug	4
Genetic	3
Behavioral\|Diagnostic Test	2
Behavioral\|Drug\|Other	2
Behavioral\|Other\|Procedure	2
Behavioral\|Procedure	2
Biological\|Device\|placebo	2
Biological\|Other\|placebo	2
Device\|placebo	2
Diagnostic Test\|Other	2
Dietary Supplement\|Drug	2
Dietary Supplement\|Drug\|placebo	2
Drug\|Other\|placebo	2
Other\|placebo	2
Behavioral\|Biological	1
Behavioral\|Biological\|Drug	1
Behavioral\|Device\|Procedure	1
Behavioral\|Diagnostic Test\|Drug	1
Behavioral\|Dietary Supplement	1
Biological\|Device	1
Biological\|Drug\|Other	1
Biological\|Drug\|placebo	1
Biological\|Procedure	1
Combination Product\|Device	1
Device\|Procedure	1
Drug\|Genetic	1
Drug\|placebo\|Procedure	1
Drug\|Radiation	1
Other\|Procedure	1
placebo	1

Count of Versions	Count of Studies
1	318
2	205
3	264
4	291
5	222
6	183
7	143
8	106
9	67
10	78
11	62
12	46
13	35
14	29
15	21
16	27
17	24
18	12
19	12
20	14
21	12
22	17
23	8
24	10
25	12
26	9
27	15
28	7
29	4
30	5
31	7
32	7
33	3
34	7
35	4
36	6
37	3
38	5
39	6
40	6
41	10
42	6
43	5
44	4
45	2
46	2
47	2
48	3
49	1
50	1
51	1
52	1
53	4
54	1
55	2
56	2
57	2
58	1
59	1
60	1
61	1
62	1
64	1
65	2
66	2
67	2
68	3
69	1
70	1
72	4
74	1
81	1
82	2
83	1
88	1
91	1
96	1
99	1
102	1
103	1
107	1
111	1
114	1
116	1
124	1
128	1
129	1
144	1
149	1
182	1
189	1

Site_count	Study_Count
1	308
2	22
3	22
4	9
5	11
6	9
7	2
8	10
9	8
10	6
11	6
12	4
13	3
14	2
15	6
17	5
18	4
19	5
20	3
21	5
22	1
23	3
24	3
26	2
27	1
29	3
30	1
32	1
34	2
35	2
36	2
38	2
39	1
40	1
42	1
45	2
46	1
47	1
48	1
51	1
53	1
58	1
60	1
63	2
66	1
73	1
77	1
83	1
84	1
90	1
91	1
102	1
223	1
267	1

Count of Versions	Count of Studies
1	42
2	54
3	85
4	43
5	45
6	36
7	21
8	16
9	16
10	23
11	8
12	14
13	7
14	7
15	2
16	2
17	6
18	1
19	2
20	6
22	3
23	2
24	5
25	2
26	5
27	4
28	3
29	1
30	1
31	1
33	2
34	1
35	2
37	1
39	2
46	2
47	1
48	1
53	1
56	1
57	1
62	1
67	1
68	2
71	1
74	1
97	2
101	1
106	1
125	1
126	1
149	1
151	1
152	2
171	1
174	1
175	1

Count of Versions	Count of Studies
1	318
2	205
3	264
4	291
5	222
6	183
7	143
8	106
9	67
10	78
11	62
12	46
13	35
14	29
15	21
16	27
17	24
18	12
19	12
20	14
21	12
22	17
23	8
24	10
25	12
26	9
27	15
28	7
29	4
30	5
31	7
32	7
33	3
34	7
35	4
36	6
37	3
38	5
39	6
40	6
41	10
42	6
43	5
44	4
45	2
46	2
47	2
48	3
49	1
50	1
51	1
52	1
53	4
54	1
55	2
56	2
57	2
58	1
59	1
60	1
61	1
62	1
64	1
65	2
66	2
67	2
68	3
69	1
70	1
72	4
74	1
81	1
82	2
83	1
88	1
91	1
96	1
99	1
102	1
103	1
107	1
111	1
114	1
116	1
124	1
128	1
129	1
144	1
149	1
182	1
189	1

Site_count	Study_Count
1	308
2	22
3	22
4	9
5	11
6	9
7	2
8	10
9	8
10	6
11	6
12	4
13	3
14	2
15	6
17	5
18	4
19	5
20	3
21	5
22	1
23	3
24	3
26	2
27	1
29	3
30	1
32	1
34	2
35	2
36	2
38	2
39	1
40	1
42	1
45	2
46	1
47	1
48	1
51	1
53	1
58	1
60	1
63	2
66	1
73	1
77	1
83	1
84	1
90	1
91	1
102	1
223	1
267	1

Count of Versions	Count of Studies
1	42
2	54
3	85
4	43
5	45
6	36
7	21
8	16
9	16
10	23
11	8
12	14
13	7
14	7
15	2
16	2
17	6
18	1
19	2
20	6
22	3
23	2
24	5
25	2
26	5
27	4
28	3
29	1
30	1
31	1
33	2
34	1
35	2
37	1
39	2
46	2
47	1
48	1
53	1
56	1
57	1
62	1
67	1
68	2
71	1
74	1
97	2
101	1
106	1
125	1
126	1
149	1
151	1
152	2
171	1
174	1
175	1

hiv infections

Study Counts

Studies over Time

Interventional Trials

Intervention Type

Count of Studies by Intervention (normalized and mapped)

Interventions over Time

Studies by Country

Sites per Study

Phase

Number of Arms

Number of Updates

Update History Change Type

Enrollment Metrics by Phase

Trial Group Type

Intervention Model

Primary Purpose

Observational Studies

Studies by Country

Sites per Study

Number of Updates

Update History Change Type

Enrollment Metrics

Observation Model

Time Perspective

Registries

Studies by Country

Sites per Study

Number of Updates

Update History Change Type

Enrollment Metrics

Registry Model

Time Perspective

Follow-up

Count of Versions	Count of Studies
1	318
2	205
3	264
4	291
5	222
6	183
7	143
8	106
9	67
10	78
11	62
12	46
13	35
14	29
15	21
16	27
17	24
18	12
19	12
20	14
21	12
22	17
23	8
24	10
25	12
26	9
27	15
28	7
29	4
30	5
31	7
32	7
33	3
34	7
35	4
36	6
37	3
38	5
39	6
40	6
41	10
42	6
43	5
44	4
45	2
46	2
47	2
48	3
49	1
50	1
51	1
52	1
53	4
54	1
55	2
56	2
57	2
58	1
59	1
60	1
61	1
62	1
64	1
65	2
66	2
67	2
68	3
69	1
70	1
72	4
74	1
81	1
82	2
83	1
88	1
91	1
96	1
99	1
102	1
103	1
107	1
111	1
114	1
116	1
124	1
128	1
129	1
144	1
149	1
182	1
189	1

Site_count	Study_Count
1	308
2	22
3	22
4	9
5	11
6	9
7	2
8	10
9	8
10	6
11	6
12	4
13	3
14	2
15	6
17	5
18	4
19	5
20	3
21	5
22	1
23	3
24	3
26	2
27	1
29	3
30	1
32	1
34	2
35	2
36	2
38	2
39	1
40	1
42	1
45	2
46	1
47	1
48	1
51	1
53	1
58	1
60	1
63	2
66	1
73	1
77	1
83	1
84	1
90	1
91	1
102	1
223	1
267	1

Count of Versions	Count of Studies
1	42
2	54
3	85
4	43
5	45
6	36
7	21
8	16
9	16
10	23
11	8
12	14
13	7
14	7
15	2
16	2
17	6
18	1
19	2
20	6
22	3
23	2
24	5
25	2
26	5
27	4
28	3
29	1
30	1
31	1
33	2
34	1
35	2
37	1
39	2
46	2
47	1
48	1
53	1
56	1
57	1
62	1
67	1
68	2
71	1
74	1
97	2
101	1
106	1
125	1
126	1
149	1
151	1
152	2
171	1
174	1
175	1